Jar-holder.



W. J. MUCALLUM.

JAR HOLDER'. y APPLIOATION FILED JUNE 5, 1909.

936,927. Patent/ed Oct. 12, 1909..

Hullimilnlllu IIHIHIHHIU IlllllwI attoznu l J'. McCALLUM, 0F FOND DULAC, WISCONSIN.

. Janneman.

Specification of Letters Patent.l Patented 00h12, 1909.

Application filed June, 1909. Serial Nn. 500,367.

To all whom 'it'ma'y concern.'

Be it knownthat I, WILLIAM J. MCCALLUM, a citizen of the lUnitedlStates, residing'at Fond du Lac, in the county of Fond du La(l andState of Wisconsin, have invented new and useful Iniprovements inJar-I-l'olders, of

which the following is a specification.

This invention is designed to provide novel means for securing fruitjars when tightening the caps thereof which is adjustable so as to bereadily adapted for jars of different lsizes and adapted to securelyhold the same without endangering fracture thereof.

A further purpose of the invention is to supply a device of thecharacter and for the purpose aforesaid which vis portable and capableof being .secured to a table, bench or` other supporting means and whichembodies adjustable jaws which are clothed with rubber, felt or othermaterial to prevent injurious pressure upon the sides of the jaws, oneof the jaws being operable by means of a handle and adapted to beautomatically withdrawn by means of a spring, the handle being of suchformatie-n at the operating end to provide a lock for holding the jawsin firm engagement with the jar when the latter is clamped so as toprevent turning thereof during the tightening of thel cap.

The invention consists in the'novel features, details of constructionand combinations of parts, which hereinafter will be more particularlyset forth, illustrated in the accompanying dra-wings and pointed out inthe appended claims.

Referring to the drawings forming a part of the specification, Figure 1is a top plan view of a jar holder embodying the invention. Fig. 2 is afront view thereof.v Fi 3 is a longitudinal section of the adjustablejaw and the mount therefor. Fig. 4 is a longitudinal section of themovable jaw, the mount therefor and the operating handle.

Corresponding and like parts are referred to in thefollowing descriptionand indicated in all the views of the drawings by the same referencecharacters.

The holder comprises a base 1 which may be of any construction and sizeand usually consists of a board or block of wood. A

clamp 2 is providedv at one side of the board` for securing the same toa table, bench, shelf or the like, said clamp being ivoted to a pair ofbrackets 3 secured to the ase 1 in any substantial way. By having theclamp pivoted to the base, it may be turned so as to lie thereon andoccupy a small amount of space and by locating said cla-mp at. one sideof the base it may be secured to the edgeportion of a table, shelf orthe like.

Brackets 4 and 5 are secured to opposite end portions of the base andconstitute mounts for receiving and supporting the jaws 6 and 7. Thejaws 6 and 7 are of similar formation, their gripping faces beingconcave so as io conformto the outer surface of the jar 8a adapted to beclamped be tween said jaws. To prevent injurious and dangerous pressureof the jaws against the sides of the jar, said jaws are supplied with acovering of rubber, felt or like material andy said yieldable materialis roughened or corrugated as indicated most clearly in Fig.

. l to prevent slipping ofthe jar upon the application of force totighten the cap or cover thereof. Eachof the jaws is provided with astem which is slidably mounted in the respective mount or bracket. Aset-screw 8 threaded into the upper portion of the bracket or mount 4 isadapted to engage at its inner end with the stem 9 of the jaw 6 therebyholding the latter in the adjusted position. The stem 10 of the jaw 7 isadapted to be engaged by the cam 11 at the inner end of the operatinghandle 12 which is pivoted at 13 to themount 5. The cam 11 is of suchformation as to gradually move the jaw 7 and to lock the same when thejaw has reached a position to grip the jar 8a between the two jaws. Aretractile spring 14 of the helical type is secured at one end to thejaw 7 and at its opposite end to themount 5 and serves to automaticallywithdraw the jaw 7 from engagement with the jar when the operatinghandle 12 is moved to normal position. v

It is to be understood that the jaw 7 has a given movement for eachsized jar so that when the operating handle 12 reaches the limit of itsmovement in one direction, it forms a lockl with said jaw to hold thelatter in clamping position. When the operating handle 12 is in theosition sho'wn in Fig. l, the jaw 7 is at the limit of its outwardmovement but when the operating'handle 12 is moved to a position toaline with the stem 10 of the jaw 7, the end of the cam 11 abutssquarely against the stem 10 and holds the jaw 7 in forward position orin clamping engagement with the jar 8. The jaw 6 1s adjustable to adaptthe holder for different sizes of jars and after the jaw 6 hasbeen y setfor the jar of a given size it is secured by means of the set-screw `8and remains relatively fixed, the jaw 7 only being movable by the actionof the operating handle 12 and the spring 14, the latterl withdrawingthe jaw 7 when the operating handle 12 1s returned to normal positionand said o erating handle advances the jaw 7 after t e jar has beenlaced in position upon the base 1.

From t e foregpmg description, taken in connection with t e accompanyingdrawing,

, the advantages of the' construction and of themethod of operatiop willbe readilyapparent to those skilled in the art to which the inventionappertains, and while I have described the prlnciple of operation of theesepav the respective mounts, means for securing one of the jaws in theadjusted position, an operating lever pivoted to the other mount andadapted to enga e a stem of the jaw supported thereby an arranged tomove in a plane parallel with the base to advance the jaw and hold thesame in clamping position.

2. A jar holder comprising a base, a clamp prvotally connected to theside of the base intermediate of its ends, mounts secured upon oppositeend ortions of the base, jaws having stems sli able in the respectivemounts, means for securing one of the jaws to its mount in theadjustedposition, a spring for retracting the other jaw, andan operating'leverpivoted to move in a plane parallel with the base, and having a cam leadto engage with the stem of the jaw to advance the latter and hold thesame in clamping position.

In testimony whereof I aiiix my signature in presence of two witnesses.

WILLIAM J. MCC'ALLUM.

